package lab02.test32;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by dell on 2017/11/9.
 */
public class Test {
    public static void main(String[] args) {
        Map<String,String> map=new HashMap<>();
        //向map添加数据
        //id—>"1"、name—>"张三"、gender—>"男"、 age—>"25"、love—>"爱学Java"；
        map.put("id","1");
        map.put("name","张三");
        map.put("gender","男");
        map.put("age","25");
        map.put("love","爱学Java");
        //遍历一个map
        for(Map.Entry<String,String> entry:map.entrySet()){
            System.out.println(entry.getKey()+":"+entry.getValue());
          //  System.out.println(entry.getValue());
        }
        System.out.println("集合的大小："+map.size());
        //删除键为age的元素
        for(Map.Entry<String,String>entry:map.entrySet()){
            if(entry.getKey().equals("age")){
                map.remove(entry.getKey());
            }
        }
        System.out.println("集合的大小："+map.size());
    }
}
